准噶尔盆地阜东斜坡阜19井区三叠系韭菜园子组沉积正演模拟  

Forward modeling of sedimentation in the Triassic Jiucaiyuanzi Formation in Well Fu19 area of the Fudong slope,Junggar Basin

作　　者：何文军[1] 刘敏珠 吴俊军[1] 杨彤远 朱卡 李啸[1] 姚同云 HE Wenjun;LIU Minzhu;WU Junjun;YANG Tongyuan;ZHU Ka;LI Xiao;YAO Tongyun(Research Institute of Petroleum Exploration and Development,Xinjiang Oilfield Company,PetroChina,Karamay,Xinjiang,834000,China;ESSCA Company,Beijing City,100101,China)

机构地区：[1]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000 [2]北京阿什卡技术开发有限公司,北京100101

出　　处：《油气地质与采收率》2018年第6期7-15,共9页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"准噶尔前陆冲断带油气成藏;关键勘探技术与新领域目标优选"(2016ZX05003-005)和"新疆北部深层区域构造格架;沉积演化与有利区带评价"(2017ZX05008-006-003-001);国家"973"计划"致密油(页岩油)资源评价与富集区预测"(2014CB239002)

摘　　要：为降低低钻井密度区源-汇沉积体系时空展布研究的不确定性,探索沉积正演模拟在准噶尔盆地的适用性。利用钻井、地震等资料,结合前人研究成果,应用DionisosFlow沉积正演模拟软件,对准噶尔盆地阜东斜坡阜19井区三叠系韭菜园子组开展沉积正演模拟。结果表明,阜19井区以东北克拉美丽山的远物源和北三台凸起的点物源为主要物源供给,凸起南部的东物源为次要物源供给,形成远源辫状河三角洲前缘细粒沉积与点物源相对粗碎屑近源混杂沉积。其沉积演化受湖平面频繁升降的影响,纵向上表现为2个中期正旋回,岩性上形成典型的"泥包砂"特征。阜19井周缘韭二段湖水动力影响减弱,发育来自南缘山前扇三角洲沉积的优质砂体,与滨浅湖亚相的泥岩间互叠置,形成良好的储盖组合,是研究区较有利的油气勘探区域。In order to reduce uncertainty in the spatial and temporal distribution of source-convergence sedimentary system with low well density,the applicability of the sedimentary forward modeling in the Junggar Basin was discussed.Based on drilling and seismic data of the research area,combined with previous knowledge on the sedimentary background,the sedimentary system of Triassic Jiucaiyuanzi Formation in Well Fu19 area of the Fudong slope,Junngar Basin was simulated forwardly by means of sedimentary forward modelling using the DionisosFlow software.Results show that the far source at Kelameili Mountain located in the northeast to the Well Fu19 area and the point source at the Beisantai uplift are the main sediments supply,the east source in the south of the uplift is the secondary source.As a result,the far-source fine-grained braided river delta front was formed and the near-source hybrid sediments with coarse grains were deposited from the point source.The overall sedimentary evolution was influenced by the frequent lake level rise and fall.Consequently,there are two mid-stage positive cycles in vertical,having the typical lithology characteristics of“sand enveloped by mud”.Good sand body deposited at the front fan delta in the second member of Jiucaiyuan Formation in the periphery of Well Fu19 area,where the effect of lake water dynamic action is weak,together with the superposed mudstone in the shore-shallow lacustrine facies,a good combination of reservoirs and cap rocks can be formed,which is a favorable area for exploration.

关 键 词：韭菜园子组 沉积体系 物源方向 沉积正演模拟 阜东斜坡 准噶尔盆地 

分 类 号：TE112[石油与天然气工程—油气勘探]